Title: Study on the Absorption and Translocation of Cadmium in Tobacco in Compound Pollution Soil and the Improvement Effect on Cadmium Pollution by Remediators
Abstract: [Objective] The research aimed to study the absorption and translocation law of heavy metal cadmium(Cd) in tobacco and the improvement effects of remediators on heavy metals, and provide scientific basis for realizing the artificial regulation of Cd activity eventually. [Method] In pot test, the absorption law of tobacco in the soil with compound pollution to heavy metal Cd, the improvement effects of 5 kinds of remediators on heavy metals and the interrelationships between Cd in tobacco and fresh weight, other heavy metals were studied. [Result] The transfer coefficient of Cd in tobacco ranged from 2.28 to 4.60 and the ability of translocating Cd element from roots to leaves was strong. Tobacco belonged to crops with tolerance to Cd element and Cd content in different parts showed a decreasing trend along with the process of growth stage. Adding remediators decreased Cd content in tobacco plant to different degree. Cd content in different parts showed a significantly negative correlation with its fresh weight. Under the conditions of compound pollution, Cd content in tobacco plant had significant positive correlation with other heavy metals (Pb, As and Hg). [Conclusion] Remediators decreased Cd content in tobacco, at the same time they also decreased the contents of other heavy metals, which increased the biomass yield of tobacco and reached the double efficacy of increasing the safety quality and yield of tobacco.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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